Events

HMS Truant fires two torpedoes against the British merchant Alster off the Breidsundet, Norway. The German merchant Alster was captured in the Vestfjord off Norway on 10 April 1940 by the British destroyer HMS Icarus. HMS Truant was unaware of this but fortunately both torpedoes missed their target.

HMS Truant attacks the Italian merchant Bainsizza with gunfire about 45 nautical miles north-north-west of Tripoli, Libya. The target was not hit and Truant was forced to dive by the escort. HMS Truant attacked again with 3 torpedoes about 60 nautical miles north-north-west of Tripoli, Libya. All torpedoes missed.

HMS Truant torpedoes sinks the German merchant Virginia S. in the Otranto Strait about 30 nautical miles east of Capo Santa Maria di Leuca, Italy. The Italian Arborea was missed during the same attack.

HMS Truant torpedoes and sinks the Japanese army cargo ship Tamon Maru No.1 in the Strait of Malacca.

0 comments

This form is for you to comment on, or add additional information to this page. Any questions will be deleted. If you wish to ask a question or otherwise contact the Branch or the Webmaster. Please use the Contact Us page or ask your question on our Facebook Page

Name (required)

Email (will not be published; required)

Please insert the result of the arithmetical operation from the following image:

=

Note: All submissions are subject to webmaster approval prior to appearing on the page. As a Spam prevention measure, any comments containing links to other sites will be automatically discarded

Change Class

Boats In Class

T Group 1 Specification

Length overall

275'

Beam

26' 6"

Depth

14' 3"

Displacement

1327 tons (surface)

1575 tons (submerged)

Diving Depth

300'

Speed

Surface 15.25 knots (design)

Surface 15.25 knots (service)

Submerged 9 knots (design)

Submerged8.75 knots (service)

No. of shafts

2

Endurance

Surface: 7500 miles at 15.25 knots (design)

(ii) Surface: 8000 miles at 10 knots (service)

Submerged: 80 miles at 4 knots (design)

Submerged: 80 miles at 4 knots (service)

Armament

(i) 8 21" bow tubes (2 external)

2 21" amidship tubes

(16 torpedoes carried)

1 4" gun

(ii) 0.303" machine-guns

Complement

56

Notes

(i) As an alternative load, Group 1 submarines could carry 18 mines

(ii) These were later replaced by, or supplemented by one 20mm Oerlikon cannon